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Definitions

• the present invention relates to inhibitors of 11 ⁇ -hydroxysteroid dehydrogenase type 1 (11 ⁇ -HSD1), pharmaceutical compositions thereof and methods of using the same.
• Glucocorticoids such as Cortisol (hydrocortisone) are steroid hormones that regulate fat metabolism, function and distribution, and play a role in carbohydrate, protein and fat metabolism. Glucocorticoids are also known to have physiological effects on development, neurobiology, inflammation, blood pressure, metabolism, and programmed cell death. Cortisol and other corticosteroids bind both the glucocorticoid receptor (GR) and the mineralocorticoid receptor (MR), which are members of the nuclear hormone receptor superfamily and have been shown to mediate Cortisol function in vivo. These receptors directly modulate transcription via DNA-binding zinc finger domains and transcriptional activation domains.
• Cortisol hydrocortisone
• glucocorticoid action was attributed to three primary factors: (1) circulating levels of glucocorticoid (driven primarily by the hypothalamic-pituitary-adrenal (HPA) axis); (2) protein binding of glucocorticoids in circulation; and (3) intracellular receptor density inside target tissues.
• HPA hypothalamic-pituitary-adrenal
• glucocorticoid function has been identified: tissue-specific pre-receptor metabolism by glucocorticoid-activating and -inactivating enzymes.
• 11 ⁇ - hydroxysteroid dehydrogenase pre-receptor control enzymes modulate activation of GR and MR by regulation of glucocorticoid hormones.
• 11 ⁇ -HSD1 also known as 11-beta-HSD type 1, 11betaHSD1 , HSD11B1, HDL, and HSD11 L
• 11 ⁇ -HSD2 also known as 11-beta-HSD type 1, 11betaHSD1 , HSD11B1, HDL, and HSD11 L
• 11 ⁇ -HSD1 is a bi-directional oxidoreductase that regenerates active Cortisol from inactive 11-keto forms
• 11 ⁇ -HSD2 is a unidirectional dehydrogenase that inactivates biologically active Cortisol by converting it into cortisone.
• the two isoforms are expressed in a distinct tissue-specific fashion, consistent with the differences in their physiological roles.
• 11 ⁇ -HSD1 is widely distributed in rat and human tissues; expression of the enzyme and corresponding mRNA have been detected in human liver, adipose tissue, lung, testis, bone and ciliary epithelium.
• 11 ⁇ -HSD1 may regulate intraocular pressure and may contribute to glaucoma; some data suggest that inhibition of 11 ⁇ -HSD1 may cause a drop in intraocular pressure in patients with intraocular hypertension (Kotelevstev et al. (1997), Proc. Natl. Acad. Sci. USA 94(26): 14924-9).
• 11 ⁇ -HSD1 catalyzes both 11-beta-dehydrogenation and the reverse 11- oxoreduction reaction
• 11 ⁇ -HSD1 acts predominantly as a NADPH-dependent oxoreductase in intact cells and tissues, catalyzing the formation of active Cortisol from inert cortisone (Low et al. (1994) J. MoI. Endocrin. 13: 167-174).
• 11 ⁇ -HSD2 expression is found mainly in mineralocorticoid target tissues such as kidney (cortex and medulla), placenta, sigmoid and rectal colon, salivary gland and colonic epithelial cell lines.
• 11 ⁇ -HSD2 acts as an NAD-dependent dehydrogenase catalyzing the inactivation of Cortisol to cortisone (Albiston et al. (1994) MoI. Cell. Endocrin. 105: R11-R17), and has been shown to protect the MR from glucocorticoid excess (e.g., high levels of receptor-active Cortisol) (Blum, et al. (2003) Prog. Nucl. Acid Res. MoI. Biol. 75:173-216). Mutations in either the 11 ⁇ -HSD1 or the 11 ⁇ -HSD2 genes result in human pathology.
• H6PD cortisone reductase deficiency
• PCOS polycystic ovary syndrome
• 11 ⁇ - HSD1 inhibitors could be effective in combating obesity and/or aspects of the metabolic syndrome cluster, including glucose intolerance, insulin resistance, hyperglycemia, hypertension, and/or hyperlipidemia (Kotelevstev et al. (1997) Proc. Natl. Acad. Sci. 94: 14924-14929; Morton et al. (2001) J. Biol. Chem. 276: 41293-41300; Morton et al. (2004) Diabetes 53: 931-938).
• inhibition of 11 ⁇ -HSD1 activity may have beneficial effects on the pancreas, including the enhancement of glucose-stimulated insulin release (Billaudel and Sutter (1979) Horm. Metab. Res. 11 : 555-560; Ogawa et al. (1992) J. Clin. Invest. 90: 497-504; Davani et al. (2000) J. Biol. Chem. 275: 34841- 34844).
• glucocorticoids and 11 ⁇ -HSD1 play a role in regulation of in intra-ocular pressure (lOP) (Stokes et al. (2000) Invest. Ophthalmol. Vis. Sci. 41 : 1629-1683; Rauz et al. (2001) Invest. Ophthalmol. Vis. Sci. 42: 2037-2042); if left untreated, elevated IOP can lead to partial visual field loss and eventually blindness.
• lOP intra-ocular pressure
• Transgenic aP2-11 ⁇ HSD1 mice exhibit high arterial blood pressure and have increased sensitivity to dietary salt. Moreover, plasma angiotensinogen levels are elevated in the transgenic mice, as are angiotensin Il and aldosterone; and treatment of the mice with an angiotensin Il antagonist alleviates the hypertension (Masuzaki et al. (2003) J. Clinical Invest. 112: 83-90). This suggests that hypertension may be caused or exacerbated by 11 ⁇ -HSD1 activity. Thus, 11 ⁇ -HSD1 inhibitors may be useful for treatment of hypertension and hypertension-related cardiovascular disorders.
• PAI-1 plasminogen activator inhibitor 1
• Glucocorticoids can have adverse effects on skeletal tissues; and prolonged exposure to even moderate glucocorticoid doses can result in osteoporosis (Cannalis (1996) J. Clin. Endocrinol. Metab. 81 : 3441-3447).
• 11 ⁇ -HSD1 has been shown to be present in cultures of human primary osteoblasts as well as cells from adult bone (Cooper et al. (2000) Bone 27: 375-381), and the 11 ⁇ -HSD1 inhibitor carbenoxolone has been shown to attenuate the negative effects of glucocorticoids on bone nodule formation (Bellows et al. (1998) Bone 23: 119-125).
• 11 ⁇ -HSD1 is predicted to decrease the local glucocorticoid concentration within osteoblasts and osteoclasts, thereby producing beneficial effects in various forms of bone disease, including osteoporosis.
• 11 ⁇ -HSD1 inhibitors may also be useful for immunomodulation.
• glucocorticoids are perceived to suppress the immune system, in actuality, there is a complex, dynamic interaction between the HPA axis and the immune system (Rook (1999) Baillier's Clin. Endocrinol. Metabl. 13: 576-581).
• Glucocorticoids play a role in modulating the balance between cell-mediated and humoral immune response, with high glucocorticoid activity normally associated with a humoral response. Inhibition of 11 ⁇ -HSD1 therefore can be used a means of shifting the immune response towards a cell-mediated response.
• Certain disease states such as tuberculosis, leprosy (Hansen's disease) and psoriasis, trigger immune responses that are biased towards a humoral response whereas the more effective immune response may be a cell- mediated response.
• 11 ⁇ -HSD1 inhibitors may be useful for treating such diseases.
• novel compounds of the instant invention are effective inhibitors of 11 ⁇ -HSD1.
• Formula I and its constituent members are defined herein as follows: t is 1 , 2 or 3; the pyrrolidine, piperidine or azepane ring is optionally substituted with 1 or 2 groups independently selected from fluorine, chlorine, bromine, iodine, cyano, nitro, amino, hydroxy, carboxy, (CrC 6 )alkyl, hydroxy(Ci-C 6 )alkyl, (C 3 -C 6 )cycloalkyl, hydroxy(C 3 -C 6 )cycloalkyl, (C 4 -C 7 )cycloalkylalkyl, (C 2 -C 6 )alkenyl, halo(C 2 -C 6 )alkenyl, hydroxy(C 2 -C 6 )alkenyl, (C 2 -C 6 )alkynyl, (C 3 -C 6 )cycloalkyl(C 2 -C 4 )alkyn
• Cy 2 is a pyridyl, pyridazinyl, pyrimidinyl, pyrazinyl, thiadiazolyl, thiazolyl or pyrazolyl and is optionally substituted with 1 to 4 groups independently selected from fluorine, chlorine, bromine, iodine, cyano, nitro, amino, hydroxy, carboxy, (Cr C 6 )alkyl, hydroxy(C r C 6 )alkyl, (C 3 -C 6 )cycloalkyl, hydroxy(C 3 -C 6 )cycloalkyl, (C 4 - C 7 )cycloalkylalkyl, (C 2 -C 6 )alkenyl, halo(C 2 -C 6 )alkenyl, hydroxy(C 2 -C 6 )alkenyl, (C 2 - C 6 )alkynyl, (C 3 -C 6 )cycloalkyl(C 2 -C
• R 2 is (C- ⁇ -C 6 )alkyl, aryl, heteroaryl, cycloalkyl or heterocyclyl and is optionally substituted with up to 4 groups independently selected from fluorine, chlorine, bromine, iodine, cyano, nitro, amino, hydroxy, carboxy, (CrC 6 )alkyl, hydroxy(CrC 6 )alkyl, (C 3 -C 6 )cycloalkyl, hydroxy(C 3 -C 6 )cycloalkyl, (C 4 -C 7 )cycloalkylalkyl, (C 2 -C 6 )alkenyl, halo(C 2 -C 6 )alkenyl, hydroxy(C 2 -C 6 )alkenyl, (C 2 -C 6 )alkynyl, (C 3 -C 6 )cycloalkyl(C 2 - C 4 )alkynyl, halo(C r C 6
• Another embodiment of the invention is a pharmaceutical composition
• a pharmaceutical composition comprising i) a pharmaceutically acceptable carrier or diluent, and ii) a compound of Formulas I, II, Iu 1'20 , Iv 1'20 , Iw 1'20 or Ix 1'7 , or a pharmaceutically acceptable salt, enantiomer or diastereomer thereof.
• Another embodiment of the invention is a method of inhibiting 11 ⁇ -HSD1 activity comprising the step of administering to a mammal in need of such treatment an effective amount of a compound of Formulas I, II, Iu 1"20 , Iv 1"20 , Iw 1'20 or Ix 1"7 , or a pharmaceutically acceptable salt, enantiomer or diastereomer thereof.
• Another embodiment of the invention is a method of treating a subject with a disease associated with the activity or expression of 11 ⁇ -HSD1 , comprising the step of administering to the subject an effective amount of a compound of Formulas I 1 II, Iu 1'20 , Iv 1"20 , Iw 1"20 or Ix 1"7 , or a pharmaceutically acceptable salt, enantiomer or diastereomer thereof.
• Another embodiment of the invention is the use of a compound of Formulas I 1 II, Iu 1"20 , Iv 1"20 , Iw 1"20 or Ix 1"7 , or a pharmaceutically acceptable salt, enantiomer or diastereomer thereof for the manufacture of a medicament for inhibiting 11 ⁇ -HSD1 activity in a mammal in need of such treatment.
• Another embodiment of the invention is the use of a compound of Formulas I 1 II, Iu 1"20 , Iv 1"20 , Iw 1"20 or Ix 1"7 , or a pharmaceutically acceptable salt, enantiomer or diastereomer thereof for the manufacture of a medicament for treating a subject with a disease associated with the activity or expression of 11 ⁇ -HSD1.
• Another embodiment of the invention is a compound of Formulas I 1 II, Iu 1"20 , Iv 1"20 ,
• Iw 1"20 or Ix 1"7 or a pharmaceutically acceptable salt, enantiomer or diastereomer thereof for use in inhibiting 11 ⁇ -HSD1 activity in a mammal in need of such treatment.
• Another embodiment of the invention is a compound of I 1 II, Iu 1"20 , Iv 1"20 , Iw 1"20 or Ix 1"7 , or a pharmaceutically acceptable salt, enantiomer or diastereomer thereof for use in for treating a subject with a disease associated with the activity or expression of 11 ⁇ - HSD1.
• Cy 2 is pyridyl optionally substituted by 1 to 4 groups independently selected from halo, hydroxy, methoxy, hydroxymethyl, methoxycarbonyl, amino, carbamoyl, methylcarbamoyl, dimethylcarbamoyl, (2-methoxyethyl)aminocarbonyl, acetylaminomethyl, methylsulfonyl, methylsulfonylamino, methylaminosulfonyl, isopropylaminosulfonyl, dimethylaminosulfonyl, pyrrolidine-1-sulfonyl, methylsulfonylaminomethyl, tetrazolyl, methyl, trifluoromethyl, acetyl, 2-hydroxyethyl and 1-aminoethyl;
• Another embodiment of the invention is a compound of Formula II, or a pharmaceutically acceptable salt, enantiomer or diastereomer thereof; t is 1 , 2, or 3; Cy 2 is optionally substituted pyridazinyl or thiazolyl; R 2 is (Ci-C 6 )alkyl, aryl, heteroaryl, cycloalkyl or heterocyclyl and is optionally substituted with up to 4 groups independently selected from fluorine, chlorine, bromine, iodine, cyano, nitro, amino, hydroxy, carboxy, (CrC 6 )alkyl, hydroxy(CrC 6 )alkyl, (C 3 -C 6 )cycloalkyl, hydroxy(C 3 - C 6 )cycloalkyl, (C 4 -C 7 )cycloalkylalkyl, (C 2 -C 6 )alkenyl, halo(C 2 -C 6 )alkenyl, hydroxy(C 2
• Another embodiment of the invention is a compound of any one of Formulas Iu 1' 20 or a pharmaceutically acceptable salt, enantiomer or diastereomer thereof:
• the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings are optionally substituted (substitution at ring carbons bonded to hydrogen and ring nitrogen atoms bonded to hydrogen atoms are encompassed, i.e., a "substitutable ring nitrogen atom") with up to four substituents as described for Cy 2 in the first embodiment; and the pyrrolidine, piperidine and azepane rings are optionally substituted with 0, 1 or 2 substituents as described in the first embodiment.
• Suitable substituents for pyrrolidine, piperidine and azepane rings and Cy 2 and suitable values for R 2 , R 3 and E are as defined above in the first embodiment; and t is 1 , 2 or 3.
• suitable substituents for the pyrrolidine, piperidine and azepane rings and the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings in Formulas Iu 1'20 are independently fluorine, chlorine, bromine, iodine, cyano, nitro, amino, hydroxy, carboxy, (C r C 6 )alkyl, hydroxy(CrC 6 )alkyl, (C 3 -C 6 )cycloalkyl, hydroxy(C 3 -C 6 )cycloalkyl, (C 4 -C 7 )cycloalkylalkyl, (C 2 -C 6 )alkenyl, halo(C 2 -C 6 )alkenyl, hydroxy(C 2 -C 6 )alkenyl, (C 2 -C 6 )alkynyl, (C 3 -C 6 )cycloalky
• suitable substituents for the pyrrolidine, piperidine and azepane rings include oxo, (Ci-C 4 )alkyl, (Ci-C 4 )alkoxy, (CrC4)haloalkyl, (CrC 4 )haloalkoxy, halogen, cyano and nitro;
• suitable substituents for a substitutable ring nitrogen atom in the pyrazole rings in Formulas Iu 18"20 include (C r C 4 )alkyl, (C 3 -C 4 )cycloalkyl, (C 3 - C 4 )cycloalkyl(CrC 2 )alkyl, and (Ci-C 4 )haloalkyl;
• suitable substituents for a ring carbon atom in the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings in Formulas Iu 1"20 include fluorine, chlorine
• t is preferably 2; R 2 is preferably phenyl or fluorophenyl; and R 3 is preferably 2-hydroxy-2-methylpropyl or 2-cyano-2-methylpropyl.
• Formulas Iu 1"20 wherein t is 2; R 2 is preferably phenyl or fluorophenyl; R 3 preferably is 2-hydroxy-2-methylpropyl or 2-cyano-2-methylpropyl; one or two ring carbon atoms in the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings in Formulas Iu 1"20 are optionally substituted with fluoro, chloro, cyano, CONH 2 , CONHMe, CONMe 2 , CONHc-Pr, methyl, ethyl or CF 3 ; the substitutable ring nitrogen atom in the pyrazole rings in Formulas Iu 18'20 are optionally substituted with (CrC 4 )alkyl, (C 3 -C 4 )cycloalkyl, (C 3 -C 4 )cycloalkyl(Ci-
• Another embodiment of the invention is a compound of any one of Formulas Iv 1" 20 , or a pharmaceutically acceptable salt, enantiomer or diastereomer thereof:
• the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings are optionally substituted (substitution at ring carbons bonded to hydrogen and ring nitrogen atoms bonded to hydrogen atoms are encompassed, i.e., a "substitutable ring nitrogen atom") with up to four substituents as described for Cy 2 in the first embodiment.
• Suitable substituents for Cy 2 and suitable values for R 2 , R 3 and E are as defined above in the first embodiments, t is 1 , 2 or 3.
• suitable substituents for the pyrrolidine, piperidine and azepane rings and the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings in Formulas Iv 1" 20 are independently fluorine, chlorine, bromine, iodine, cyano, nitro, amino, hydroxy, carboxy, (CrC 6 )alkyl, hydroxy(CrC 6 )alkyl, (C 3 -C 6 )cycloalkyl, hydroxy(C 3 -C 6 )cycloalkyl, (C 4 -C 7 )cycloalkylalkyl, (C 2 -C 6 )alkenyl, halo(C 2 -C 6 )alkenyl, hydroxy(C 2 -C 6 )alkenyl, (C 2 - C 6 )alkynyl, (C 3 -C 6 )cycloalkyl
• suitable substituents for the pyrrolidine, piperidine and azepane rings include oxo, (Ci-C 4 )alkyl, (CrC 4 )alkoxy, (CrC 4 )haloalkyl, (CrC 4 )haloalkoxy, halogen, cyano and nitro;
• suitable substituents for a substitutable ring nitrogen atom in the pyrazole rings in Formulas Iv 18'20 include (CrC 4 )alkyl, (C 3 -C 4 )cycloalkyl, (C 3 - C 4 )cycloalkyl(CrC 2 )alkyl, and (C 1 -C 4 )haloalkyl;
• suitable substituents for a ring carbon atom in the pyridine, pyhdazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings in Formulas Iv 1"20 include fluorine
• t is preferably 2; R 2 is phenyl or fluorophenyl; and R 3 is 2-hydroxy-2- methylpropyl or 2-cyano-2-methylpropyl.
• Formulas Iv 1"20 t is preferably 2; R 2 is phenyl or fluorophenyl; R 3 is 2-hydroxy-2- methylpropyl or 2-cyano-2-methylpropyl; one or two ring carbon atoms in the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings in Formulas Iv 1" 20 are optionally substituted with fluoro, chloro, cyano, CONH 2 , CONHMe, CONMe 2 , CONHc-Pr, methyl, ethyl or CF 3 ; the substitutable ring nitrogen atom in the pyrazole rings in Formulas Iv 18"20 is optionally substituted with (C r C 4 )alkyl, (C 3 -C 4 )cycloalkyl, (C 3 -C 4 )cycloalkyl(Ci-C 2 )alkyl, and (Ci-C 2 )
• Another embodiment of the invention is a compound of any one of Formulas Iw 1" 20 or a pharmaceutically acceptable salt thereof:
• the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings are optionally substituted (substitution at ring carbons bonded to hydrogen and ring nitrogen atoms bonded to hydrogen atoms are encompassed, i.e., a "substitutable ring nitrogen atom") with up to four substituents as described for Cy 2 in the first embodiment.
• Suitable substituents for Cy 2 and suitable values for R 2 and R 3 are as defined above in the first embodiment; suitable values for G 1 are independently fluorine, chlorine, bromine, iodine, cyano, nitro, amino, hydroxy, carboxy, hydroxy(C 1 -C 6 )alkyl, (C 3 -C 6 )cycloalkyl, hydroxy(C 3 -C 6 )cycloalkyl, (C 4 -C 7 )cycloalkylalkyl, (C 2 -C 6 )alkenyl, halo(C 2 -C 6 )alkenyl, hydroxy(C 2 -C 6 )alkenyl, (C 2 -C 6 )alkynyl, (C 3 - C 6 )cycloalkyl(C 2 -C 4 )alkynyl, halo(C r C 6 )alkyl, halo(C 3 -C 6 )cycloalkyl, hal
• C 6 )alkyl ⁇ aminocarbonyl(Ci-C 6 )alkyl and di(C 3 -C 6 )cycloalkylaminocarbonyl(Ci-C 6 )alkyl; n is O, 1 or 2; and t is 1 , 2 or 3.
• suitable values for G 1 are independently fluorine, chlorine, bromine, iodine, cyano, nitro, amino, hydroxy, carboxy, (CrC 6 )alkyl, hydroxy(Ci-C 6 )alkyl, (C 3 -C 6 )cycloalkyl, hydroxy(C 3 -C 6 )cycloalkyl, (C 4 -C 7 )cycloalkylalkyl, (C 2 -C 6 )alkenyl, halo(C 2 -C 6 )alkenyl, hydroxy(C 2 -C 6 )alkenyl, (C 2 -C 6 )alkynyl, (C 3 - C 6 )cycloalkyl(C 2 -C 4 )alkynyl, halo(CrC 6 )alkyl, halo(C 3 -C 6 )cycloalkyl, halo(C 4 - C 7 )cycloalkyl,
• suitable values for G 1 include oxo, (Ci-C 4 )alkyl, (Ci-C 4 )alkoxy, (Ci-C 4 )haloalkyl, (CrC 4 )haloalkoxy, halogen, cyano and nitro;
• suitable substituents for a substitutable ring nitrogen atom in the pyrazole rings in Formulas Iw 18"20 include (CrC 4 )alkyl, (C 3 -C 4 )cycloalkyl, (C 3 -C 4 )cycloalkyl(CrC 2 )alkyl, and (CrC 4 )haloalkyl;
• suitable substituents for a ring carbon atom in the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings in Formulas Iw 1"20 include fluorine, chlorine, cyano, hydroxy, amino, (CrC 4
• t is preferably 2; R 2 is preferably phenyl or fluorophenyl; and R 3 is preferably 2-hydroxy-2-methylpropyl or 2-cyano-2-methylpropyl.
• Formulas Iw 1"20 or a pharmaceutically acceptable salt thereof wherein t is 2; R 2 is phenyl or fluorophenyl; R 3 is 2-hydroxy-2-methylpropyl or 2-cyano- 2-methylpropyl; one or two ring carbon atoms in the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings in Formulas Iw 1"20 are optionally substituted with fluoro, chloro, cyano, CONH 2 , CONHMe, CONMe 2 , CONHc-Pr, methyl, ethyl or CF 3 ; the substitutable ring nitrogen atom in the pyrazole rings in Formulas Iw 18" 20 is optionally substituted with (C 1 -C 4 )alkyl, (C 3 -C 4 )cycloalkyl, (C 3 -C 4 )cyclo
• n is O or 1 , preferably O; each G 1 is independently (Ci-C 4 )alkyl, (C 1 -C 4 )alkoxy, (C 1 -C 4 )haloalkyl, (C 1 -C 4 )haloalkoxy, halogen, cyano or nitro; the pyrazole ring is substituted at its substitutable ring nitrogen atom with hydroxy(Ci-C 6 )alkyl, (CrC 6 )alkyl- carbonylamino(C r C 6 )alkyl, (C 1 -C 6 )alkylsulfonylamino(C 1 -C 6 )alkyl, (CrC 6 )alkoxy(Cr C 6 )alkyl, amino(CrC 6 )alkyl,
• R 3 is 2-hydroxy-2-methylpropyl or 2- cyano-2-methylpropyl; and the remainder of the variables are as described in the First Alternate Embodiment.
• R 2 is phenyl or fluorophenyl; and R 3 is 2-hydroxy-2-methylpropyl or 2-cyano-2-methylpropyl; and the remainder of the variables are as described in the First Alternate Embodiment.
• R 2 is phenyl or fluorophenyl
• R 3 is 2- hydroxy-2-methylpropyl or 2-cyano-2-methylpropyl
• one or two substitutable ring carbon atoms in the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings are optionally substituted with methyl or ethyl; and the remainder of the variables are as described in the First Alternate Embodiment.
• n is O and all of the substitutable ring carbons in the pyridine, pyridazine, pyrimidine, pyrazine, pyrazole, thiazole and thiadiazole rings are preferably unsubstituted.
• Another embodiment of the invention is a compound represented by any one of Formulas It 1"6 , or a pharmaceutically acceptable salt thereof:
• G 1 is oxo, (C r C 4 )alkyl, (C r C 4 )alkoxy, (CrC 4 )haloalkyl, (C 1 - C 4 )haloalkoxy, halogen, cyano and nitro;
• n is O 1 1 or 2;
• G 2a and G 2b are independently selected from hydrogen, fluorine, chlorine, cyano, hydroxy, amino, (C- ⁇ -C 4 )alkyl, (C 3 - C 4 )cycloalkyl, (C 3 -C 4 )cycloalkyl(Ci-C 2 )alkyl, halo(C r C 4 )alkyl, (C r C 4 )alkoxy, (C 1 - C 4 )haloalkoxy, CONH 2 , (CrC ⁇ alkylaminocarbonyl, di(C r C 4 )alkylaminocarbony
• R 2 is preferably phenyl or fluorophenyl; and R 3 preferably is 2-hydroxy-2-methylpropyl or 2-cyano-2-methylpropyl.
• n is O or 1 , preferably O; each G 1 is independently (CrC 4 )alkyl, (C 1 -C 4 )alkoxy, (C 1 -C 4 )haloalkyl, (CrC 4 )haloalkoxy, halogen, cyano or nitro; G 2a is hydrogen, hydroxy(C r C 6 )alkyl, (Ci-C 6 )alkylcarbonylamino(Ci-C 6 )alkyl, (Ci-C 6 )alkylsulfonylamino(Ci-C 6 )alkyl, (Ci-C 6 )alkoxy(Ci-C 6 )alkyl, amino(Ci-C 6 )alkyl, (Ci-C 6 )alkylamino
• R 1 is methyl or ethyl
• R 2 is phenyl, thienyl, pyridyl or isopropyl each optionally substituted with up to three groups independently selected from halo, methyl, methylthio or (4-morpholino)methyl
• R 2 is phenyl optionally substituted with
• R 3 is 2-hydroxy-2-methylpropyl or 2- cyano-2-methylpropyl; and the remainder of the variables are as described in the Second Alternate Embodiment.
• R 2 is phenyl or fluorophenyl; and R 3 is 2-hydroxy-2-methylpropyl or 2-cyano-2-methylpropyl; and the remainder of the variables are as described in the Second Alternate Embodiment.
• R 2 is phenyl or fluorophenyl
• R 3 is 2- hydroxy-2-methylpropyl or 2-cyano-2-methylpropyl
• one or two substitutable ring carbon atoms in the pyridyl, pyridazinyl, pyrimidinyl, pyrazinyl, thiadiazolyl and thiazolyl rings are optionally substituted with methyl or ethyl; and the remainder of the variables are as described in the Second Alternate Embodiment.
• n is 0 and G 2b is preferably -H.
• alkyl means a straight or branched hydrocarbon radical having 1-10 carbon atoms and includes, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec- butyl, isobutyl, tert-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl and the like.
• cycloalkyl means a monocyclic, bicyclic or tricyclic, saturated hydrocarbon ring having 3-10 carbon atoms and includes, for example, cyclopropyl (c- Pr), cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, bicyclo[2.2.2]octyl, bicyclo[2.2.1]heptyl, spiro [4.4]nonane, adamantyl and the like.
• cyclopropyl c- Pr
• cyclobutyl cyclopentyl
• cyclohexyl cycloheptyl
• cyclooctyl bicyclo[2.2.2]octyl
• bicyclo[2.2.1]heptyl bicyclo[2.2.1]heptyl
• spiro [4.4]nonane adamantyl and the like.
• aryl means an aromatic radical which is a phenyl group, a naphthyl group, an indanyl group or a tetrahydronaphthalene group.
• An aryl group is optionally substituted with 1-4 substituents.
• substituents include alkyl, alkoxy, alkylthio, alkylsulfonyl, halogen, trifluoromethyl, dialkylamino, nitro, cyano, CO 2 H, CONH 2 , N- monoalkyl-substituted amido and N,N-dialkyl-substituted amido.
• heteroaryl means a 5- and 6-membered heteroaromatic radical which may optionally be fused to a saturated or unsaturated ring containing 0-4 heteroatoms selected from N, O, and S and includes, for example, a heteroaromatic radical which is 2- or 3-thienyl, 2- or 3-furanyl, 2- or 3- pyrrolyl, 2-,3-, or 4-pyridyl, 2-pyrazinyl, 2-, 4-, or 5-pyrimidinyl, 3- or 4-pyridazinyl, 1 H-indol-6-yl, 1H-indol-5-yl, 1 H-benzimidazol-6-yl, 1 H- benzimidazol-5-yl, 2-, A-, 5-, 6-, 7- or 8-quinazolinyl, 2-, 3-, 5-, 6-, 7- or 8-quinoxalinyl, 2- , 3-, 4-, 5-, 6-, 7- or 8-quinolinyl, 1-,
• a heteroaryl is optionally substituted.
• substituents include alkyl, alkoxy, alkylthio, alkylsulfonyl, halogen, trifluoromethyl, dialkylamino, nitro, cyano, CO 2 H, CONH 2 , N-monoalkyl- substituted amido and N,N-dialkyl-substituted amido, or by oxo to form an N-oxide.
• heterocyclyl means a 4-, 5-, 6- and 7-membered saturated or partially unsaturated heterocyclic ring containing 1 to 4 heteroatoms independently selected from N, O, and S.
• exemplary heterocyclyls include pyrrolidine, pyrrolidin-2-one, 1- methylpyrrolidin-2-one, piperidine, piperidin-2-one, dihydropyridine, tetrahydropyridine, piperazine, 1-(2,2,2-trifluoroethyl)piperazine, 1 ,2-dihydro-2-oxopyridine, 1 ,4-dihydro-4- oxopyridine, piperazin-2-one, 3,4,5,6-tetrahydro-4-oxopyrimidine, 3,4-dihydro-4- oxopyrimidine, tetrahydrofuran, tetrahydropyran, tetrahydrothiophene, tetrahydrothiopyran, isoxa
• spirocycloalkyl means a cycloalkyl group which shares one ring carbon with another alkyl or cycloalkyl group.
• subject and patient may be used interchangeably, and means a mammal in need of treatment, e.g., companion animals (e.g., dogs, cats, and the like), farm animals (e.g., cows, pigs, horses, sheep, goats and the like) and laboratory animals (e.g., rats, mice, guinea pigs and the like).
• the subject is a human in need of treatment.
• solvates or hydrates of the compound or its pharmaceutically acceptable salts are also included.
• Solvates refer to crystalline forms wherein solvent molecules are incorporated into the crystal lattice during crystallization.
• Solvate may include water or nonaqueous solvents such as ethanol, isopropanol, DMSO, acetic acid, ethanolamine, and EtOAc.
• Solvates, wherein water is the solvent molecule incorporated into the crystal lattice are typically referred to as "hydrates.” Hydrates include stoichiometric hydrates as well as compositions containing variable amounts of water.
• the term “compound” also includes labeling at one or more positions with deuterium. "Labeled with deuterium at a position” means that the amount deuterium at the position is greater than the amount that is present at natural abundance. In certain instances, the deuterium at each position in a “compound” is at natural abundance. Certain of the disclosed compounds may exist in various stereoisomeric forms.
• Stereoisomers are compounds that differ only in their spatial arrangement. Enantiomers are pairs of stereoisomers whose mirror images are not superimposable, most commonly because they contain an asymmetrically substituted carbon atom that acts as a chiral center. "Enantiomer” means one of a pair of molecules that are mirror images of each other and are not superimposable. Diastereomers are stereoisomers that are not related as mirror images, most commonly because they contain two or more asymmetrically substituted carbon atoms. The symbol “*" in a structural formula represents the presence of a chiral carbon center. "R” and “S” represent the configuration of substituents around one or more chiral carbon atoms.
• R * and S* denote the relative configurations of substituents around one or more chiral carbon atoms.
• Racemate or “racemic mixture” means a compound of equimolar quantities of two enantiomers, wherein such mixtures exhibit no optical activity; i.e., they do not rotate the plane of polarized light.
• “Geometric isomer” means isomers that differ in the orientation of substituent atoms in relationship to a carbon-carbon double bond, to a cycloalkyl ring, or to a bridged bicyclic system. Atoms (other than H) on each side of a carbon-carbon double bond may be in an E (substituents are on opposite sides of the carbon-carbon double bond) or Z (substituents are oriented on the same side) configuration.
• the compounds of the invention may be prepared as individual isomers by either isomer-specific synthesis or resolved from an isomeric mixture.
• Conventional resolution techniques include forming the salt of a free base of each isomer of an isomeric pair using an optically active acid (followed by fractional crystallization and regeneration of the free base), forming the salt of the acid form of each isomer of an isomeric pair using an optically active amine (followed by fractional crystallization and regeneration of the free acid), forming an ester or amide of each of the isomers of an isomeric pair using an optically pure acid, amine or alcohol (followed by chromatographic separation and removal of the chiral auxiliary), or resolving an isomeric mixture of either a starting material or a final product using various well known chromatographic methods.
• the stereochemistry of a disclosed compound is named or depicted by structure
• the named or depicted stereoisomer is at least 60%, 70%, 80%, 90%, 99% or 99.9% by weight pure relative to the other stereoisomers.
• the depicted or named enantiomer is at least 60%, 70%, 80%, 90%, 99% or 99.9% by weight optically pure. Percent optical purity by weight is the ratio of the weight of the enantiomer over the weight of the enantiomer plus the weight of its optical isomer.
• the compounds of the invention may be present in the form of pharmaceutically acceptable salts.
• the salts of the compounds of the invention refer to non-toxic "pharmaceutically acceptable salts.”
• Pharmaceutically acceptable salt forms include pharmaceutically acceptable acidic/anionic or basic/cationic salts.
• Pharmaceutically acceptable basic/cationic salts include, the sodium, potassium, calcium, magnesium, diethanolamine, n-methyl-D-glucamine, L-lysine, L-arginine, ammonium, ethanolamine, piperazine and triethanolamine salts.
• Pharmaceutically acceptable acidic/anionic salts include, the acetate, benzenesulfonate, benzoate, bicarbonate, bitartrate, bromide, calcium edetate, camsylate, carbonate, chloride, citrate, dihydrochloride, edetate, edisylate, estolate, esylate, fumarate, glyceptate, gluconate, glutamate, glycollylarsanilate, hexylresorcinate, hydrobromide, hydrochloride, hydroxynaphthoate, iodide, isethionate, lactate, lactobionate, malate, maleate, malonate, mandelate, mesylate, methylsulfate, mucate, napsylate, nitrate, pamoate, pantothenate, phosphate/diphospate, polygalacturonate, salicylate, stearate, subacetate, succinate, s
• TFA trifluoroacetic acid TIc TLC thin layer chromatography
• TMS trimethylsilyl TMSCI chlorotrimethylsilane or trimethylsilyl chloride retention time
• a compound of Formula I* can be prepared by reaction of an aminoalcohol intermediate of Formula Il with a reagent of Formula III, wherein Z 1 and Z 2 are leaving groups such as chloride, 1-imidazolyl or aryloxide in an inert solvent such as THF, CH2CI2, toluene or MeCN, usually in the presence of an organic or inorganic base such as triethylamine or NaHCO 3 respectively, at -10 0 C to 120 0 C:
• reagent III is especially convenient because they are commercially available.
• III is phosgene.
• Z 1 and Z 2 are both 1-imidazolyl
• III is carbonyl diimidazole.
• Z 1 is chloride and Z 2 is p-nitrophenoxide
• III is p-nitrophenyl chloroformate.
• Z 1 and Z 2 are both OCCI 3
• III is triphosgene and as little as one third of molar equivalent can be used.
• Aminoalcohol intermediates of Formula Il can be prepared by reduction of amides of Formula IV using a hydride reagent such as BH 3 THF solution, BH 3 .Me2S or LiAIH 4 in an inert solvent ethereal such as THF or DME at 20 0 C to 100 0 C for between 1 h and 48 h:
• a hydride reagent such as BH 3 THF solution, BH 3 .Me2S or LiAIH 4 in an inert solvent ethereal such as THF or DME
• Intermediates of Formula IV can be prepared by coupling a ⁇ -hydroxyacid of Formula V with an amine of Formula Vl using standard peptide coupling reagents such as EDC in the presence of HOBt and N,N-diisopropylethylamine in an inert solvent such as CH 2 CI 2 at 0 - 30 °C for between 1 h and 24 h:
• Amine intermediates of Formula Vl can be prepared by reduction of amides of Formula VII using a hydride reagent such as BH 3 THF solution, BH 3 .Me 2 S or LiAIH 4 in an inert solvent ethereal such as THF or DME at 20 0 C to 100 0 C for between 1 h and 48 h:
• a hydride reagent such as BH 3 THF solution, BH 3 .Me 2 S or LiAIH 4 in an inert solvent ethereal such as THF or DME
• Amine intermediates of Formula Vl can be prepared from ketones of formula VIII via oximes of Formula IX or by reductive amination of a ketone of Formula VIII with ammonia:
• lntermediates of Formula Il can also be prepared by reductive amination of ⁇ - hydroxyaldehydes of Formula Xl with amines of Formula Vl. Methods for the reductive amination of aldehydes are described in Baxter, E. W. and Reitz, A. B. Organic Reactions" Volume 59, Ed. Overman, L. E., Wiley Interscience, 2002.
• Aldehydes of Formula Xl can be prepared from homoallylic alcohols of Formula XXI by treatment with OsO 4 and NaIO 4 .
• Aminoalcohol intermediates of Formula Il can also be prepared by reaction of aminoalcohols of Formula XII with ketones of Formula VIII in the presence of a reducing agent such as NaCNBH 3 or Na(OAc) 3 BH:
• Amino-alcohol intermediates of Formula XII can be prepared by treatment of sulfonate intermediates of Formula XVII, wherein wherein R A is for example methyl, trifluoromethyl or p-methylphenyl, with sodium azide to give an azide intermediate of Formula XVIII, followed by catalytic hydrogenation or by Staudinger reduction with PPh 3 in wet THF:
• XII Sulfonate intermediates of Formula XVII can be prepared from diol intermediates of Formula XIX with a sulfonyl chloride R A SO 2 CI:
• Diol intermediates of Formula XIX can be prepared by hydroboration of allyl alcohols of Formula XX:
• Diol intermediates of Formula XIX can be prepared by ozonolysis and reduction of homoallyl alcohols of Formula XXI:
• a compound of Formula I* can be prepared by reaction of a ketocarbamate of Formula XXIV, wherein R D is an alkyl or arylalkyl group such as methyl, t-butyl or benzyl, with an organometallic reagent of Formula XXV wherein M includes, but is not limited to, MgCI, MgBr, MgI or Li:
• organometallic reagent XXV is allylmagnesium bromide, allylzinc(ll) bromide, (2-methylallyl)magnesium chloride or (2-methoxy-2- oxoethyl)zinc(ll) bromide.
• M is MgCI 1 MgBr or MgI 1
• CeCI 3 it is advantageous to add CeCI 3 to the reaction mixture.
• Ketocarbamates of Formula XXIV can be prepared by reaction of aminoketones of Formula XXVI with intermediates of Formula XXVII wherein R E is a leaving group such as chloride, succinyloxy, imidazolyl or t-butoxycarboxycarbonyl:
• Aminoketones of Formula XXVI can be prepared by reaction of ⁇ , ⁇ -unsaturated ketones of Formula XXVIII with amines of Formula Vl:
• Aminoketones of Formula XXVI can be prepared by reaction of ⁇ - dialkylaminoketones of Formula XXVIII 1 wherein R F is lower alkyl especially methyl, with amines of Formula Vl:
• XXVIII Vl ⁇ -Dialkylaminoketones of Formula XXVIII are in turn derived from ⁇ , ⁇ -unsaturated ketones of Formula XXVII with dialkylamines of Formula R F NHR F .
• a compound of Formula I* can be prepared by reaction of a compound of Formula XVII with an isocyanate of Formula XXIX in the presence of a base:
• lsocyanates of Formula XXIX can be prepared from amines of Formula Vl by treatment with phosgene, diphosgene or triphosgene.
• a compound of Formula I* can be prepared by reaction of a halo compound of Formula, wherein Hal is chlorine or bromine, with an isocyanate of Formula XXIX in the presence of a base:
• Halo compounds of Formula XXX can be prepared by reaction of ⁇ -haloketones of Formula XXXI with organometallic reagents of Formula XXV wherein M is a metal containing radical including MgCI, MgBr, MgI or Li. The reaction is optionally carried out in the presence of anhydrous cerium trichloride:
• a compound of Formula I* can be prepared by reaction of a cyclic amine of Formula XXXIV with various heterocyclic compounds of Formula XXXV.
• R w is fluoro, chloro, bromo, iodo, S ⁇ 2Me, SO 2 CF 3 , OSO 2 Me or OSO 2 CF 3 and the reaction is carried out thermally in the presence of a suitable base such as J-Pr 2 NEt.
• R w is iodo or bromo and the reaction is carried out in the presence of a palladium or copper catalyst.
• R w is B(OR Y )2, wherein R ⁇ is hydrogen or (Ci-C 6 )alkyl, or the two groups R ⁇ taken together form a (Ci-Ci 2 )alkylene group, and the reaction is carried out in the presence of a copper catalyst.
• the second and third modifications can be performed at lower temperature than the first modification.
• Cyclic amine compounds of Formula XXXIV can be prepared from protected cyclic amine compounds of Formula XXXIVa, wherein PG is an amine protecting group such t-butoxycarbonyl or benzyloxycarbonyl.
• Protected cyclic amines of Formula XXXIVa can be prepared using certain processes analogous to those shown for Compounds of Formula I*.
• first process in Eqns 1 , 2, 3, 5, 6, and 7, structures of intermediates containing Cy 2 are replaced with the analogous structures in which Cy 2 is replaced by PG.
• second process in Eqns 13, 14, 15 and 16, structures of intermediates containing Cy 2 are replaced with the analogous structures in which Cy 2 is replaced by PG.
• Eqn 17 structures of intermediates containing Cy 2 are replaced with the analogous structures in which Cy 2 is replaced by PG.
• a compound of Formula I is prepared from a hydroxycarbamate of Formula XXXVI by treatment with a strong base, such as sodium hydride, in an inert solvent such as THF.
• a strong base such as sodium hydride
• Hydroxycarbamates of Formula XXXVI 1 wherein R D is an alkyl or arylalkyl group such as methyl, t-butyl or benzyl can be prepared by reaction of aminoalcohols of Formula Il with intermediates of Formula XXVII wherein R D is R E is a leaving group such as chloride, succinyloxy, imidazolyl or t-butoxycarboxycarbonyl:
• aminoalcohols of Formula Il can also be prepared by reaction of chloroalcohols of Formula XXX with amines of Formula Vl:
• a compound of Formula I* can be prepared from another compound of Formula I*.
• a compound of Formula I* can be prepared from another compound of Formula I*.
• a compound of Formula I* wherein R 3 is ⁇ -hydroxy(C 2 -C 6 )alkyl
• R 3 is ⁇ -carboxy(CrC 5 )alkyl
• a compound of Formula I* wherein R 3 is ⁇ -carboxy(Ci-C 6 )alkyl
• a compound of Formula I* wherein R 3 is ⁇ -hydroxy(CrC 6 )alkyl, can be converted to its methanesulfonate or trifluoromethanesulfonate, treated with sodium azide and reduced to give a compound of Formula I*, wherein R 3 is ⁇ -amino(Ci- C 6 )alkyl.
• a compound of Formula I*, wherein R 3 is amino(Ci-C 6 )alkyl can be reacted with methanesulfonyl chloride to give a compound of Formula I*, wherein R 3 is ⁇ methanesulfonylamino ⁇ (CrC 6 )alkyl.
• a compound of Formula I*, wherein R 3 is (C 2 -C 6 )alkenyl is hydroborated to afford a compound of Formula I*, wherein R 3 is hydroxy(C 2 -C 6 )alkyl.
• Formula I* wherein R 3 is vicinal dihydroxy(C 2 -C 6 )alkyl,.
• a compound of Formula I*, wherein R 3 is (C 2 -C 6 )alkenyl can be reacted with ozone followed by NaBH 4 to give a compound of Formula I*, wherein R 3 is ⁇ - hydroxy(CrC 5 )alkyl.
• R 3 is aminosulfonylamino(Ci-C 6 )alkyl.
• a compound of Formula I*, wherein R 3 is amino(Ci-C 6 )alkyl can be reacted with a (Ci-C 6 )alkylsulfamoyl chloride to give a compound of Formula I*, wherein R 3 is (Ci-C 6 )alkylaminosulfonylamino(Ci-C 6 )alkyl.
• a compound of Formula I*, wherein R 3 is hydroxy(CrC 6 )alkyl can be reacted with chlorosulfonyl isocyanate to give a compound of Formula I*, wherein R 3 is aminosulfonyloxy(Ci-C 6 )alkyl.
• a compound of Formula I* wherein R 3 is hydroxy(Ci-C 6 )alkyl
• R 3 is hydroxy(Ci-C 6 )alkyl
• p-nitrophenyl chloroformate pentafluorophenyl chloroformate or carbonyl diimidazole
• ammonia a (CrC 6 )alkylamine or a di(Ci-C 6 )alkylamine
• R 3 is aminocarboxy(Ci-C 6 )alkyl, (Ci-C 6 )alkyl aminocarboxy(Ci-C 6 )alkyl or di(CrC 6 )alkyl aminocarboxy(Ci-C 6 )alkyl.
• a compound of Formula I* wherein R 3 is hydroxy(C-i-C 6 )alkyl
• POCI 3 can be reacted with POCI 3 to give a compound of Formula I*, wherein R 3 is (HO) 2 P( 3 O)O(C 1 - C 6 )alkyl.
• a compound of Formula I* wherein R 3 is allyl or homoallyl, can be reacted with oxygen in the presence of PdCI 2 and CuCI to afford a compound of Formula I * , wherein R 3 is 2-oxopropyl or 3-oxobutyl respectively.
• a compound of Formula I* wherein R 3 is 2-oxopropyl or 3-oxobutyl, can be reacted with MeMgX, wherein X is Cl, Br or I, to give a compound of Formula I * , wherein R 3 is 2-hydroxy-2-methylpropyl or 3-hydroxy-3-methylpropyl respectively.
• a compound of Formula I*, wherein R 3 is -CH 2 CO 2 Me can be treated with MeMgX, wherein X is Cl, Br or I, to give a compound of Formula I*, wherein R 3 is 2- hydroxy-2-methylpropyl.
• a compound of Formula I* wherein R 3 is CH 2 C(Me) 2 CN, can be treated with acetamide in the presence of PdCI 2 to give a compound of Formula I*, wherein R 3 is CH 2 CMe 2 CONH 2 .
• certain compounds of the invention of Formula I** are prepared as follows.
• a ⁇ -chloroethyl phenyl ketone of Formula L is reacted with the Grignard or organozinc derivative of a methylallyl halide of Formula LI to afford a chloroalcohol of Formula LII which reacted with a mono-Boc protected diamine of Formula LIII to give and aminoalcohol of Formula LIV.
• Reaction with methyl chloroformate leads to a hydroxycarbamate of Formula LV.
• Treatment of LV with sodium hydride affords oxazinone LVI.
• Step 3 A solution of (3S)-tert-butyl 3-(3-hydroxy-5-methyl-3-phenylhex-5- enylamino)piperidine-1-carboxylate (8.41 g, 21.65 mmol), triethylamine (4.53 ml_, 1.5 equiv), pyridine (1.75 mL, 1 equiv) in dichloromethane (250 mL) was cooled to O 0 C. Methyl chloroformate (3.35ml_, 2equiv) was added slowly during a 10 min period. After 15min, the mixture was warmed to rt slowly and stirred 3 h.
• Step 5 To a solution of (S)-tert-butyl 3-((R)-6-(2-methylallyl)-2-oxo-6-phenyl-1 ,3- oxazinan-3-yl)piperidine-1-carboxylate (2.98g, 7.2mmol) in dichloromethane (200 mL) was added m-CPBA (77% maximum, 3.3g, 2equiv).
• the mixture was stirred 3 h at rt before being diluted by dichloromethane (15OmL), washed by 5% NaOH solution (2 x 4OmL) 1 30% aq sodium thiosulfate solution (30 ml_), satd aq NaHCO 3 (3OmL), 30% aq sodium thiosulfate solution (30 mL), satd aq NaHCO 3 (3OmL), brine (3OmL), and dried over Na 2 SO 4 .
• Step 4 The two diastereomers of (3S)-tert-butyl 3-(6-(4-fluorophenyl)-6-(3- hydroxypropyl)-2-oxo-1 ,3-oxazinan-3-yl)piperidine-1 -carboxylate were prepared from (3S)-tert-butyl 3-(6-allyl-6-(4-fluorophenyl)-2-oxo-1 ,3-oxazinan-3-yl)piperidine-1 - carboxylate by treatment with (i) BH 3 in THF and (ii) H 2 O 2 and NaOH.
• the title compound was prepared from 6-((S)-3-((R)-6-(4-fluorophenyl)-6-(3- hydroxypropyl)-2-oxo-1 ,3-oxazinan-3-yl)piperidin-1-yl)nicotinamide following the steps indicated in the scheme immediately above.
• the title compound was prepared from 6-((S)-3-((R)-6-(4-fluorophenyl)-6-(3- hydroxypropyl)-2-oxo-1 ,3-oxazinan-3-yl)piperidin-1-yl)nicotinamide following the steps indicated in the scheme immediately above.
• 4,6-dichloro-3-methylpyridazine was prepared following the procedure described in WO 2003/041712 (Intermediate A3, p12).
• Example 1 heating at 150 0 C for 20 min.
• the assay begins by dispensing 49 ⁇ l of substrate solution (5OmM HEPES, pH 7.4, 10OmM KCI, 5mM NaCI, 2mM MgCI 2 , 2 mM NADPH and 160 nM [ 3 H]cortisone (1 Ci/mmol)) and mixing in 1 ⁇ L of the test compounds in DMSO previously diluted in half-log increments (8 points) starting at 0.1 mM. After a 10 minute pre-incubation, 50 ⁇ L of enzyme solution containing microsomes isolated from CHO cells overexpressing human 11 ⁇ -HSD1 (10-20 ⁇ g/ml of total protein) was added, and the plates were incubated for 90 minutes at rt.
• substrate solution 5OmM HEPES, pH 7.4, 10OmM KCI, 5mM NaCI, 2mM MgCI 2 , 2 mM NADPH and 160 nM [ 3 H]cortisone (1 Ci/mmol)
• the reaction was stopped by adding 50 ⁇ l of the SPA beads suspension containingiO ⁇ M 18 ⁇ -glycyrrhetinic acid, 5 mg/ml protein A coated YSi SPA beads (GE Healthcare) and 3.3 ⁇ g/ml of anti-cortisol antibody (East Coast Biologies) in Superblock buffer (Bio-Rad).
• the plates were shaken for 120 minutes at rt, and the SPA signal corresponding to [ 3 H]cortisol was measured on a Microbeta plate reader.
• the inhibition of 11 ⁇ -HSD1 by compounds of this invention was measured in whole cells as follows.
• Cells for the assay were obtained from two sources: fully differentiated human omental adipocytes from Zen-Bio, Inc.; and human omental pre- adipocytes from Lonza Group Ltd.
• Pre-differentiated omental adipocytes from Zen-Bio Inc. were purchased in 96-well plates and were used in the assay at least two weeks after differentiation from precursor preadipocytes.
• Zen-Bio induced differentiation of pre-adipocytes by supplementing medium with adipogenic and lipogenic hormones (human insulin, dexamethasone, isobutylmethylxanthine and PPAR-gamma agonist).
• the cells were maintained in full adipocyte medium (DMEM/Ham's F-12 (1 :1 , v/v), HEPES pH 7.4, fetal bovine serum, penicillin, streptomycin and Amphotericin B, supplied by Zen-Bio, Inc.) at 37 0 C, 5% CO 2 .
• DMEM/Ham's F-12 (1 :1 , v/v) HEPES pH 7.4, fetal bovine serum, penicillin, streptomycin and Amphotericin B, supplied by Zen-Bio, Inc.
• Pre-adipocytes were purchased from Lonza Group Ltd. and placed in culture in Preadipocyte Growth Medium-2 supplemented with fetal bovine serum, penicillin, and streptomycin (supplied by Lonza) at 37 0 C, 5% CO 2 .
• Pre-adipocytes were differentiated by the addition of insulin, dexamethasone, indomethacin and isobutyl-methylxanthine (supplied by Lonza) to the Preadipocyte Growth Medium-2. Cells were exposed to the differentiating factors for 7 days, at which point the cells were differentiated and ready for the assay. One day before running the assay, the differentiated omental adipocytes were transferred into serum- and phenol-red-free medium for overnight incubation.
• the assay was performed in a total volume of 200 ⁇ L.
• the cells were pre-incubated with serum-free, phenol-red-free medium containing 0.1% (v/v) of DMSO and various concentrations of the test compounds at least 1 h before [ 3 H] cortisone in ethanol (50Ci/mmol, ARC, Inc.) was added to achieve a final concentration of cortisone of 100 nM.
• the cells were incubated for 3-4 hrs at 37 0 C, 5% CO 2 . Negative controls were incubated without radioactive substrate and received the same amount of [ 3 H] cortisone at the end of the incubation.
• microsomal preparation of 11 ⁇ -HSD1 in the presence of 50% human plasma by compounds of the invention was measured as follows. Microsomes from CHO cells overexpressing human 11 ⁇ -HSD1 were diluted into reaction buffer consisting of 25 mM HEPES 1 pH 7.4, 50 mM KCI, 2.5 mM NaCI, 1 mM MgCI2, and 50% (v/v) human plasma (BioChemed). The assay began by dispensing 49 ⁇ l of microsome solution into 96-well polypropylene plates and adding 1 ⁇ l of the test compounds in DMSO, previously diluted in half-log increments (8 points) starting at 1.0 mM.
• reaction was initiated with the addition of 50 ⁇ l substrate solution consisting of reaction buffer with 2 mM NADPH and 160 nM [ 3 -H]cortisone (1 Ci/mmol).
• substrate solution consisting of reaction buffer with 2 mM NADPH and 160 nM [ 3 -H]cortisone (1 Ci/mmol).
• the plates were incubated for 120 minutes at rt, and the reaction was quenched with the addition of 100 ⁇ l acetonitrile with 20 mM cortisone and 20 mM Cortisol. After a ten minute incubation at rt, 100 ⁇ l of each well was filtered through a Multiscreen HTS, HV filter plate (Millipore) and diluted with 100 ⁇ l of reaction buffer without human plasma.
• [ 3 - H]cortisone and [ 3 -H]cortisol were separated by HPLC on a Zorbax SB-C8 column (4.6 x 250 mm, Agilent) with an isocratic elution at 25% acetonitrile in water with 0.01 % trifluoroacetic acid, and radioactivity was quantified with an in-line ⁇ -RAM (IN/US Systems, Inc.).
• the amount of Cortisol was determined by reading the time-resolved fluorescence of the wells (Ex 320/75 nm; Em 615/8.5 nm and 665/7.5 nm). The ratio of the two emission signals was then calculated (Em665*10000/Em615).
• Each assay contained incubations with vehicle controls instead of compound as controls for non-inhibited Cortisol generation (100% CTL; 'high values') and incubations with carbenoxolone as controls for fully inhibited enzyme and Cortisol background (0% CTL; 'low values').
• Each assay also contained a calibration curve with Cortisol to transform the fluorescent data into Cortisol concentrations. Percent inhibition of each compound was determined relative to the carbenoxolone signal.
• BIOLOGICAL TEST EXAMPLE 4 The inhibition of a microsomal preparation of 11 ⁇ -HSD1 in the presence of 50% human plasma by compounds of the invention was measured as follows. Microsomes from CHO cells overexpressing human 11 ⁇ -HSD1 were diluted into reaction buffer consisting of 25 mM HEPES, pH 7.4, 50 mM KCI, 2.5 mM NaCI, 1 mM MgCI2, and 50% (v/v) human plasma (BioChemed). The assay began by dispensing 49 ⁇ l of microsome solution into 96-well polypropylene plates and adding 1 ⁇ l of the test compounds in DMSO, previously diluted in half-log increments (8 points) starting at 1.0 mM.
• reaction was initiated with the addition of 50 ⁇ l substrate solution consisting of reaction buffer with 2 mM NADPH and 160 nM [ 3 -H]cortisone (1 Ci/mmol).
• substrate solution consisting of reaction buffer with 2 mM NADPH and 160 nM [ 3 -H]cortisone (1 Ci/mmol).
• the plates were incubated for 120 minutes at rt, and the reaction was quenched with the addition of 100 ⁇ l acetonitrile with 20 mM cortisone and 20 mM Cortisol. After a ten minute incubation at rt, 100 ⁇ l of each well was filtered through a Multiscreen HTS, HV filter plate (Millipore) and diluted with 100 ⁇ l of reaction buffer without human plasma.
• [ 3 - H]cortisone and [ 3 -H]cortisol were separated by HPLC on a Zorbax SB-C8 column (4.6 x 250 mm, Agilent) with an isocratic elution at 25% acetonitrile in water with 0.01% trifluoroacetic acid, and radioactivity was quantified with an in-line ⁇ -RAM (IN/US Systems, Inc.).
• Plasma protein binding of compounds was determined with Equilibrium Dialysis of spiked plasma against compound free dextrane buffer using a dialysis membrane with mass cutoff of 5000 Da. Compound concentrations in plasma and buffer after incubation were measured using HPLC/Mass spectrometry.
• the assay was based on a method published by Moody et al. (Xenobiotica 1999). The inhibition of cytochrome P450 3A4-isoenzyme catalysed N-demethylation of [N-methyl-14C]-Erythromycin by the test compound was assayed at 37 0 C with human recombinant cytochrome P450 3A4. All assays were carried out on a robotic system in 96 well plates. The final incubation volume of 200 ⁇ l contains TRIS buffer (0.1 M), MgCI 2 (5 mM), recombinant protein (40 pmol/ml), Erythromycin (50 ⁇ M) and the test compound either at four different concentrations in duplicate (e.g.
• the inhibition of recombinant CYP2C9 by compounds of the invention was measured using a commercial kit from Invitrogen (cat #2859). Supplied microsomes isolated from insect cells infected with a baculovirus engineered to express human CYP2C9 were diluted to 10 mM in reaction buffer (100 mM potassium phosphate buffer, pH 8.0) with an NADPH generation system (3.33 mM glucose-6-phosphate and 0.4 U/ml glucose-6-phosphate dehydrogenase).
• 89 ⁇ l of this dilution were dispensed to each well of a 96-well, black, polystyrene plate and mixed with 1 ⁇ l of test compound previously diluted in DMSO in half log increments starting at 3 mM.
• the assay was initiated by adding 10 ⁇ l of fluorogenic substrate n-octyloxymethylresorufin (OOMR, 20 ⁇ M.) with NADP (100 ⁇ M) diluted in reaction buffer.
• the plate was immediately placed in a Perkin Elmer Fusion plate reader. Reaction progress was monitored by measuring fluorescence every two minutes for a total of twenty minutes (530 nM excitation filter /605 nM emission filter).
• the compounds of the invention are useful for ameliorating or treating disorders or diseases in which decreasing the level of Cortisol is effective in treating a disease state.
• the compounds of the invention can be used in the treatment or prevention of diabetes mellitus (e.g., type Il diabetes) , obesity, symptoms of metabolic syndrome, glucose intolerance, hyperglycemica, hypertension, hyperlipidemia, insulin resistance, cardiovascular disease, dyslipidemia, atherosclerosis, lipodystrophy, osteoporosis, glaucoma, Cushing's syndrome, Addison's Disease, visceral fat obesity associated with glucocorticoid therapy, depression, anxiety, Alzheimer's disease, dementia, cognitive decline (including age-related cognitive decline), polycystic ovarian syndrome, infertility and hypergonadism.
• diabetes mellitus e.g., type Il diabetes
• obesity e.g., symptoms of metabolic syndrome, glucose intolerance, hyperglycemica, hypertension, hyperlipidemia, insulin resistance, cardiovascular disease,
• the compounds of the invention can be used as therapeutic agents for pseudo Cushing's Syndrome associated with alcoholic liver disease.
• the compounds modulate the function of B and T cells of the immune system and can therefore be used to treat diseases such as tuberculosis, leprosy and psoriasis. They can also be used to promote wound healing, particularly in diabetic patients.
• Additional diseases or disorders that are related to 11 ⁇ -HSD1 activity include those selected from the group consisting of lipid disorders, hypretriglyceridemia, hypercholesterolemia, low HDL levels, high LDL levels, vascular restenosis, pancreatitis, abdominal obesity, neurodegenerative disease, retinopathy, nephropathy, neuropathy, diabetes, coronary heart disease, stroke, peripheral vascular disease, Cushing's syndrome, hyperinsulinemia, viral diseases, and Syndrome X.
• a further disease related to 11 ⁇ -HSD1 activity is pseudo Cushing's Syndrome associated with alcoholic liver disease.
• a pharmaceutical composition of the invention may, alternatively or in addition to an 11 ⁇ -HSD1 inhibitor of the invention, comprise a pharmaceutically acceptable salt of a an 11 ⁇ -HSD1 inhibitor of the invention and one or more pharmaceutically acceptable carriers therefore.
• a pharmaceutical composition of the invention may comprise a compound of an 11 ⁇ -HSD1 inhibitor of the invention or a pharmaceutical salt thereof as the only pharmaceutically active agent in the pharmaceutical composition.
• the disclosed 11 ⁇ -HSD1 inhibitors can be used alone or in a combination therapy with one or more additional agents for the treatment of diabetes, dyslipidemia, cardiovascular disease, hypertension, obesity, cancer or glaucoma.
• compositions of the invention are 11 ⁇ -HSD1 inhibitors.
• Said compositions contain compounds having a mean inhibition constant (IC 50 ) against 11 ⁇ -HSD1 of below about 1 ,000 nM; preferably below about 100 nM; more preferably below about 50 nM; even more preferably below about 5 nM; and most preferably below about 1 nM.
• IC 50 mean inhibition constant
• the invention includes a therapeutic method for treating or ameliorating an 11 ⁇ - HSD1 mediated disorder in a subject in need thereof comprising administering to a subject in need thereof an effective amount of an 11 ⁇ -HSD1 inhibitor of the invention, or an enantiomer, diastereomer, or pharmaceutically acceptable salt thereof or composition thereof.
• "treating" or “treatment” includes both therapeutic and prophylactic treatment.
• Therapeutic treatment includes reducing the symptoms associated with a disease or condition and/or increasing the longevity of a subject with the disease or condition.
• Prophylactic treatment includes delaying the onset of a disease or condition in a subject at risk of developing the disease or condition or reducing the likelihood that a subject will then develop the disease or condition in a subject that is at risk for developing the disease or condition.
• An embodiment of the invention includes administering an 11 ⁇ -HSD1 inhibiting compound of the invention or composition thereof in a combination therapy with one or more additional agents for the treatment of diabetes, dyslipidemia, cardiovascular disease, hypertension, obesity, cancer or glaucoma.
• Agents for the treatment of diabetes include insulins, such as Humulin® (EIi Lilly), Lantus® (Sanofi Aventis), Novolin (Novo Nordisk), and Exubera® (Pfizer); PPAR gamma agonists, such as Avandia® (rosiglitizone maleate, GSK) and Actos® (pioglitazone hydrochloride, Takeda/Eli Lilly); sulfonylureas, such as Amaryl® (glimepiride, Sanofi Aventis), Diabeta® (glyburide, Sanofi Aventis), Micronase®/Glynase® (glyburide, Pfizer), and Glucotrol
• Agents for the treatment of dyslipidemia and cardiovascular disease include statins, fibrates, and ezetimbe.
• Agents for the treatment of hypertension include alpha- blockers, beta-blockers, calcium channel blockers, diuretics, angiotensin converting enzyme (ACE) inhibitors, dual ACE and neutral endopeptidase (NEP) inhibitors, angiotensin-receptor blockers (ARBs), aldosterone synthase inhibitors, aldosterone- receptor antagonists, or endothelin receptor antagonist.
• Agents for the treatment of obesity include orlistat, phentermine, sibutramine and rimonabant.
• An embodiment of the invention includes administering an 11 ⁇ -HSD1 inhibiting compound of the invention or composition thereof in a combination therapy with one or more other 11 ⁇ -HSD1 inhibitors, or with combination products, such as Avandamet® (metformin HCI and rosiglitazone maleate, GSK); Avandaryl® (glimepiride and rosiglitazone maleate, GSK); Metaglip® (glipizide and metformin HCI, Bristol Myers Squibb); and Glucovance® (glyburide and metformin HCI, Bristol Myers Squibb).
• the compounds of the present invention can be prepared and administered in a wide variety of oral and parenteral dosage forms.
• the compounds of the present invention can be administered by injection, that is, intravenously, intramuscularly, intracutaneous ⁇ , subcutaneously, intraduodenally, or intraperitoneally. Additionally, the compounds of the present invention can be administered intranasally or transdermally. It will be obvious to those skilled in the art that the following dosage forms may comprise as the active ingredient, either compounds or a corresponding pharmaceutically acceptable salt of a compound of the present invention.
• pharmaceutically acceptable carriers can either be solid or liquid.
• Solid form preparations include powders, tablets, pills, capsules, cachets, suppositories, and dispersible granules.
• a solid carrier can be one or more substances which may also act as diluents, flavoring agents, solubilizers, lubricants, suspending agents, binders, preservatives, tablet disintegrating agents, or an encapsulating material.
• the carrier is a finely divided solid which is in a mixture with the finely divided active ingredient.
• the active ingredient is mixed with the carrier having the necessary binding properties in suitable proportions and compacted in the shape and size desired.
• the powders and tablets preferably contain from about one to about seventy percent of the active ingredient.
• Suitable carriers are magnesium carbonate, magnesium stearate, talc, sugar, lactose, pectin, dextrin, starch, gelatin, tragacanth, methylcellulose, sodium caboxymethylcellulose, a low-melting wax, cocoa butter, and the like. Tablets, powders, cachets, lozenges, fast-melt strips, capsules and pills can be used as solid dosage forms containing the active ingredient suitable for oral administration.
• a low-melting wax such as a mixture of fatty acid glycerides or cocoa butter
• the active ingredient is dispersed homogeneously therein, as by stirring.
• the molten homogeneous mixture is then poured into convenient sized molds, allowed to cool, and thereby to solidify.
• Liquid form preparations include solutions, suspensions, retention enemas, and emulsions, for example, water or water propylene glycol solutions.
• liquid preparations can be formulated in solution in aqueous polyethylene glycol solution.
• Aqueous solutions suitable for oral administration can be prepared by dissolving the active ingredient in water and adding suitable colorants, flavors, stabilizing, and thickening agents as desired.
• Aqueous suspensions for oral administration can be prepared by dispersing the finely divided active ingredient in water with viscous material, such as natural or synthetic gums, resins, methylcellulose, sodium carboxymethylcellulose, and other well-known suspending agents.
• the pharmaceutical composition is preferably in unit dosage form.
• the composition is subdivided into unit doses containing appropriate quantities of the active ingredient.
• the unit dosage form can be a packaged preparation, the package containing discrete quantities of, for example, tablets, powders, and capsules in vials or ampules.
• the unit dosage form can be a tablet, cachet, capsule, or lozenge itself, or it can be the appropriate amount of any of these in packaged form.
• the quantity of active ingredient in a unit dose preparation may be varied or adjusted from about 0.1 mg to about 1000.0 mg, preferably from about 0.1 mg to about 100 mg.
• the dosages may be varied depending upon the requirements of the patient, the severity of the condition being treated, and the compound being employed. Determination of the proper dosage for a particular situation is within the skill in the art.
• the pharmaceutical composition may contain, if desired, other compatible therapeutic agents.
• the active ingredient is preferably administered orally in a solid dosage form as disclosed above in an amount of about 0.1 mg to about 100 mg per daily dose where the dose is administered once or more than once daily.

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